#!/bin/env python
import json
import urllib2
import argparse
import re
  
re_digits = re.compile(r'(\d+)')
  
def emb_numbers(s):
    pieces=re_digits.split(s)
    pieces[1::2]=map(int,pieces[1::2])
    return pieces
  
def sort_strings_with_emb_numbers2(alist):
    return sorted(alist, key=emb_numbers)
  
def requestjson(url, values):
    data = json.dumps(values)
    req = urllib2.Request(url, data, {'Content-Type': 'application/json-rpc'})
    res = urllib2.urlopen(req, data)
    output = json.loads(res.read())
  
    return output
  
  
def authenticate(url, username, password):
    values = {'jsonrpc': '2.0',
              'method': 'user.login',
              'params': {
                  'user': username,
                  'password': password
              },
              'id': '0'
    }
    output = requestjson(url, values)
  
    return output['result']
  
def gethosts(groupname, url, auth):
    host_list = {}
    values = {'jsonrpc': '2.0',
              'method': 'hostgroup.get',
              'params': {
                  'output': 'extend',
                  'filter': {'name': groupname},
                  'selectHosts': ['host']
              },
              'auth': auth,
              'id': '2'
    }
    output = requestjson(url, values)
    for host in output['result'][0]['hosts']:
        host_list[host['host']]=(host['hostid'])
  
    #return host_list
    hosts_sort = []
    for host in sort_strings_with_emb_numbers2(host_list.keys()):
        hosts_sort.append(host_list[host])
    return  hosts_sort
  
def getgraphs(host_list, name_list, url, auth, columns, graphtype=0, dynamic=0):
    if (graphtype == 0):
        selecttype = ['graphid']
        select = 'selectGraphs'
    if (graphtype == 1):
        selecttype = ['itemid', 'value_type']
        select = 'selectItems'
  
    graphs = []
    for host in host_list:
        values = ({'jsonrpc': '2.0',
                   'method': 'graph.get',
                   'params': {
                       select: [selecttype, 'name'],
                       'output': ['graphid', 'name'],
                       'hostids': host,
                       'filter': {'name': name_list},
                       'sortfield': 'name'
                   },
                   'auth': auth,
                   'id': '3'
                   })
        output = requestjson(url, values)
        bb = sorted(output['result'])
        if (graphtype == 0):
            for i in bb:
                graphs.append(i['graphid'])
        if (graphtype == 1):
            for i in bb:
                if int(i['value_type']) in (0, 3):
                    graphs.append(i['itemid'])
  
    graph_list = []
    x = 0
    y = 0
    for graph in graphs:
        graph_list.append({
            'resourcetype': graphtype,
            'resourceid': graph,
            'width': '500',
            'height': '100',
            'x': str(x),
            'y': str(y),
            'colspan': '1',
            'rowspan': '1',
        })
        x += 1
        if x == int(columns):
            x = 0
            y += 1
  
    return graph_list
  
def screencreate(url, auth, screen_name, graphids, columns):
    columns = int(columns)
    if len(graphids) % columns == 0:
        vsize = len(graphids) / columns
    else:
        vsize = (len(graphids) / columns) + 1
  
    values = {'jsonrpc': '2.0',
              'method': 'screen.create',
              'params': [{
                  'name': screen_name,
                  'hsize': columns,
                  'vsize': vsize,
                  'screenitems': []
              }],
              'auth': auth,
              'id': 2
              }
    for i in graphids:
        values['params'][0]['screenitems'].append(i)
    output = requestjson(url, values)
  
def main():
    url = 'http://ip/api_jsonrpc.php'
    username = 'username'
    password = 'password'
    auth = authenticate(url, username, password)
    host_list = gethosts(groupname, url, auth)
    graph_ids = getgraphs(host_list, graphname, url, auth, columns)
    screencreate(url, auth, screen_name, graph_ids, columns)
  
if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('-g', dest='groupname', nargs='+', metavar='groupname', type=str, help='which group you want to select')
    parser.add_argument('-G', dest='graphname', nargs='+', metavar='graphname', type=str, help='which graph you want to select')
    parser.add_argument('-c', dest='columns', metavar='columns', type=int, help='the screen columns')
    parser.add_argument('-n', dest='screen_name', metavar='screen_name', type=str, help='the screen name')
    args = parser.parse_args()
  
    groupname = args.groupname
    graphname = args.graphname
    columns = args.columns
    screen_name = args.screen_name
  
    main()
